Doorlatch



Feb. 7, 1933.

i A. R. LINDSAY DOORLATCH' Filed Jan. 30, 1929 Y Patented Feb. 7, 1793.3

f n UNITED, STATES:

ALEXANDER R. ,LINDsAiL OF DETROIT, M1onrGAN,'AssIGNOR ro. THE STUDEBAXERSi?.

CORPORATION, OF 'SOUTH BEND, INDIANmA CORPORATION `OF NEW .JERSEY p iAppncafioa mea `January 30,1929. semi' N9. 336,194..

This invention relates to door latch operating handles, l,andparticularly to means for flocking the handle against rotation tothere-` byprevent the unauthorized opening of the door of which thelatch'vmechanismv forms a ber for moving the same into engagement withthe door to thereby lock the door latch handle against rotativemovement, w and spring means forV moving the locking member out ofengagement with the door to permit rotative movementaofthe door latch`operating handle.

A further object `is to provide a leaf spring secured to the lock memberadapted tol be A placed'under tension@ when the lock member is inextended position and operableV to retract Athe lock member. i

The above being among the objects of the present invention, thesameconsists vof certain featuresV and combinations of partsto 340 behereinafter describedand lthen claimed having the above and otherobjects in view. In the accompanying drawing which illustrates a'suitable embodiment of my present invention, i

being broken away and in section, showing the locking member in lockedposition.

' Figure II is a perspective view*` similar'to I Figure I showing thelock member in rel tracted position. Y

Figure IIIl is a sectionalview taken on the line 3-3' of Figure I,showing the look mem ber'e'ngaging the door. i p Y i Figure IV is asectional 'view taken on the line 4 4 of Figure II, showing the lockmemberfin retracted position. j i f.

Figure V is'a sectional view showing the `pin for-preventinglongitudinal movementofthe cylindrical member :relative to the hollowshell.V Y

Figure I is a perspective View, certainparts Referring in detail to thedrawing in which like numerals refer to like parts throughoutl theseveral views, lI have showni for the 4purpose of illustratiom'alsection of a motor've` hicle 'door comprising an edge'fface member 1having its front face covered witha sheet metal vplate 2. The latchmechanism 3, "a

portion only of which is shown in Figures I v and II, is securedzto therear-face of Athe-donf structure. 1 f* The latch vmechanism may "anyde?V sired type and isactuated `by means' ofthe exterior handle 4 havinga shank'`5 in which is secured a hollow shell 6 adapted-to rotate" withthe handle 4 and to -be inserted through an opening 7 inthe faceplate 2.A-,nut '8 is threadably secured to the shank 5 ofthehandle 4 againstwhich isseated a washer '-9`irr terposed between' the nut 8'and theescutcheon plate 10 vfor holding the handle 'against longitudinalmovement. The hollow shell 6l terjminates at its inner end' in a shaft11 having a square portion 12adaptedto`operate the latch mechanism 3 bythe rotation of the handle4.

A cylindrical memberlB rotatably mounted in `the "hollow shell'6 is heldagainst lonfgitudinal movement relative thereto by means of the pin 14secured in theshell A6l and seat` ing in a groove 15 formed in the'clindrical member 13 as is clearly shown in igu'res'fI, IIv and V. Amember 16 Vis eccentrically formed Yon or is secured 'to the innerendof, the "cylindricall member 13; n A

'A locking member 17 is slidably supportl ed in a slot 18 formedin'thehollow shell 6. andhas a reducedfportion 19 adapted to 4re'- Y ceive andbe further supportedby a sprin 20. The spring 2() isV secured'Ytothe-'loc member 17 by riveting the inner end thereof over thefspringorzotherwise securing the same thereto. j The locking member 17 is heldthe door.' lWhen the locking member 17 is moved to the extendedposition'to engage the A109 p a Y ner'foropeningfandclosingthe door- 1yItv'vill thus be: seen YthatI `haveprovided a-simple andefficient meansfor-locking they Vlatch* mechanism against Vmovement and While Y vIhaveshovvnfone'embodiment of my invendoor edge member 1,'the spring 20is held vunder tension as is clearly shown in FigureJ III. .When-themember 16 is rotated tothe position shown in Figures IIand IV, Vthetension of the spring2O is relieved, the same acting to retract the.locking member out of engagement .With the dooredge member 1. i*

n The cylindrical member 13 is providedwith Y V.Figure lorvicey versa.As the lock mechanismin the cylindrical member 13 formsfnoVv part of myinvention, thesame Will not be described-'further but reference-may behad tothe patent application to James lRI-Iughes,

VvSerial No. 333,178, led J anuary-17 ,1929,for-'afclearer-understanding ofthe same.i l V-Havingdescribed theconstruction of the` wv-parts forming my invention, `,the `operationthereof should be readilyunderstood. When it is desired to locky lthelatch mechanism againstr-fmovement,thegkeyY 22 is inserted inthecylindrical membery 13 so that itV can be rotated independently ofthe .handle't `and i .then-hollow shell, to rotate the member 16ISO-'degrees :fromthe lposition shown inFigureg'II-to'the position shownin Figure I.

@3 5 .drawn-wherebyl the l,cylindrical member 413 'When in thispositiomvthekey 22 can be withcannot be rotated independently of thehandle 4,',andbecause thelock member 17 is eX- i Y tendedintothe s1ot21formed-.in the door edge Vmember 1, the door handlel and the latchmechanismoperatively connected therewith-is thus. lockedagainstmovement.V

In the same manner the l iey.22 can-beY insertedin the cylindricalmember 13k when the Y locking member f1? is ink .lockedl position sothat the member-16 can be rotated 180 degrees .'totheiposition shown inFigure II. When 'rotated-tothisgposition, the spring 20 Will f Y retractthe-locking member 17movingthe samei out ofthe s lot'21 in thedoor edgemem- ;ber 1; The key 22 can then be Withdrawn from the-cylindricalamember v1.3Y andthe cylindrical member 13 Willrotate Withkthe handle 4- and the hollow shell v6 sothat the latch V'mechanism canbeoperated in the usual manftion, it 'is to beiunderstood that formalchanges can'be madeV therein vWithoutv departing from Athespiritandfsubstancerof myyinve'ntion,

thel scope of Whichis commensurate With the appended'claimsg Y WhatIclaim its: .I

1. In combination with a doorv'structure I having an opening in the edgeface thereof,

a rotatable latch operating handle including a tubular 'shell mounted inthe side face of v.

said door, a. cylindrical memberlrotatably mounted. within @said fshell, key-operated means inserted in the exposed outer endrof Y saidcylindrical member for rotating the same,fa member eccentricallyf formedon the endV of `saidfirst member 'opposite to saidkeyoperated means, alocking `member supported by said shell transversely ofsaid irstimemfber in engagementvvith said second member whereby rotation thereof. inone direction moves saidlocking member into the opening in the edge faceof"said1door,gandza leat` 'i l spring supported by f said:Y lockingmember f Withinsaid tubular shell `for retracting said c locking memberwhen said second member is turned in the opposite direction. a

2. In combination with adoorhavinga sheet metal edge member providedWithCan;

opening therein`,j.a rotatable latch operating the sidefaceof said door,a-locking member extending transversely of 'and' slidable through Yanopening formed in' said'shell, a cylindrical member slidablyV mounted insaid shell having an eccentric thereon engageable f;

with said locking member for vmovingthe. Y Y

same into the opening inthe edge face of saiddoor to constrain said'latch operating handle againstrotative movement, iand Va cent the innerend thereof for` reti-,acting said spring securedto said locking memberad-ja- 1100 locking memberto move the "same 4out of engagement withsaid'door edge member.v`

3. In combination Witha door having a sheet metal edge membery providedwith' an I' opening therein, a rotatable latch operating`V` handlehaving a-tubular shell'mounted in a side face of saiddoor', said'tubular shell having a slot formed therein adjacent the introlled-member rotatably rmounted in said shell, an eccentric on saidmemberengage'able with the end of said locking memberfor movfaceof said'door,Y and ay leaf spring secured adjacentrtheend'of said locking membernery end thereof, a locking memberfslidablyllf)r A -mountedinlthe slotin said shell, a key-coning the' same into the opening inthiefedge"11i151 Within said hollow-'shell for movingfsaid Y.

locking member-out of engagementvvith the edge face'of said door.;

, Y e ;1;,20Y 4. In combination with a deorjhaving anA v, f edge memberprovidedwith an opening therein, a` rotatable latch operating handle-provided with' a slot therein mounted in the face "said door, a lockingmembermounted'in I Y said slot and slidable in said shellinto andout iof engagement With the opening'infthe edge fmember. of said; door; akey-controlled Vcylindrical member rotatably n mounted-inf said p v fvshell,'rmeans on said key-controlled'member handle having a tubularshell mounted in 190 i engageable With the end face of said lockingmember for moving said locking member into engagement with said door tothereby restrain rotation of said latch operatin handle, and springmeans supported by sai locking member engageable with the inner face ofsaid shell for moving said locking member out of engagement with saidedge member of said door.

l0 Signed by me at Detroit, Michigan, this 28 da of Januar 1929. A

y Y AL/XANDER R. LINDSAY.

CERTIFICATE 0F CORRECTION.

Patent No. 1,896,907. February 7, 1933.

ALEXANDER R. LINDSAY.

It is hereby certified that error appears in the printed specificationof the i above numbered patent requiring correction as follows: Page 2,line 124, claim 4, before "face" insert the word "side"; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of May, A. D. 1933.

M. J. Moore.

(Seal) Acting Commissioner of Patents.

